FNUS76 KSTO 300157
FWSSTO

SPOT FORECAST FOR IRON TRAP...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
657 PM PDT THU SEP 29 2011

FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
COOLING TREND WITH INCREASING WIND AND HUMIDITY FRIDAY INTO SATURDAY
AS HIGH PRESSURE MOVES EAST AND IS REPLACED WITH LOW PRESSURE FROM
THE EASTERN PACIFIC. SLIGHT CHANCE OF AN AFTERNOON SHOWER OR
THUNDERSTORM OVER THE AREA FRIDAY.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY THEN INCREASING CLOUDS WITH A
                    SLIGHT CHANCE OF A SHOWER OR THUNDERSTORM IN
                    THE AFTERNOON.
MAX TEMPERATURE.....68-73.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTHEAST WIND 2 TO 7 MPH INCREASING TO SOUTHWEST
                    6 TO 11 MPH AFTER MIDDAY WITH GUSTS TO 25 MPH.
   RIDGETOP.........SOUTH 15 TO 25 MPH.
CWR.................20 PERCENT IN THE AFTERNOON.
LAL.................1 INCREASING TO 2 IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 3300 FT AGL IN THE AFTERNOON.
MIXING WINDS........SOUTH 16 MPH.

.FRIDAY NIGHT...

SKY/WEATHER.........DECREASING CLOUDS BECOMING MOSTLY CLEAR.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........45-55 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTHEAST WINDS 2 TO 7 MPH AFTER SUNSET BECOMING
                    SOUTH 5 TO 10 MPH LATE NIGHT WITH LOCAL GUSTS UP TO
                    20 MPH.
   RIDGETOP.........SOUTH 10 TO 20 MPH WITH OCCASIONAL GUSTS UP TO 30 MPH.
CWR.................0 PERCENT.
LAL.................1.
MIXING HEIGHT.......3300 FT AGL DECREASING TO 400-1000 FT AGL EARLY
                    IN THE EVENING.
MIXING WINDS........SOUTH 10 MPH.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
MAX TEMPERATURE.....63-68.
MIN HUMIDITY........31-36 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTH WINDS 5 TO 10 MPH INCREASING TO 8 TO 15
                    MPH AFTER MIDDAY WITH GUSTS UP TO 30 MPH.
   RIDGETOP.........SOUTH 25 TO 35 MPH.
CWR.................0 PERCENT.
LAL.................1.
MIXING HEIGHT.......400-900 FT AGL INCREASING TO 4100-5300 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........SOUTH 18 MPH.


FORECASTER...PCH
REQUESTED BY...DAVE PEREIRA
REASON FOR REQUEST...PRESCRIBED
.TAG 20110930.IRONT.01/STO

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